XSLT Error

    Empty filename at /home/ubuntu/perl5/perlbrew/perls/perl-5.18.0/lib/site_perl/5.18.0/Chameleon5/Template/XSLT.pm line 575.
    

Response XML

<?xml version="1.0"?>
<response>
  <form uri="" method="post" uuid="152C9676-1993-11EA-BB7A-1A3AFC0ABCF6" encoding="&#x2713;" key="login">
    <field value="" display="Username" attrs="" name="username" id="uuid-152CC7B8-1993-11EA-BB7A-1A3AFC0ABCF6" key="username" widget="text"/>
    <field display="Password" name="password" widget="password" key="password" id="uuid-152CF9D6-1993-11EA-BB7A-1A3AFC0ABCF6" attrs=""/>
    <field widget="submit" id="uuid-152D3086-1993-11EA-BB7A-1A3AFC0ABCF6" key="submit" name="submit" attrs="" display="Login" value=""/>
  </form>
</response>